作者单位:Section of Geriatric Psychiatry, Department of Clinical Sciences, Lund University Klinikgatan 22, Lund SE-221 85, Sweden.[1]Clinical Memory Research Unit, Department of Clinical Sciences, Lund University Lund, Sweden ; Postal address: c/o Memory Clinic SE 221 85 Lund, Sweden.[2]Section of Pathology, Department of Clinical Sciences, Lund University Lund, SE-221 85, Sweden.[3]